is a suite of spreadsheet-like civil engineering tools for performing calculations related to the flow of water in pipes, culverts, ditches, and channels. The specific situations you can address with this program include: analysis of capacity, flow velocity, and depth of flow in a round pipe flowing full or partially full (by gravity); analysis of capacity, flow velocity, and depth of flow in a box section pipe flowing full or partially full (by gravity); design of a culvert, including analysis of inlet control, outlet control, and tailwater conditions; analysis of flow in a channel such as a ditch or canal, including a determination of whether the flow will be subcritical or supercritical, and an estimate of the size of sediment (bed load) that will be transported; and the design of a storm sewer system using the Rational Method.

In many cases, special algorithms are used to solve complex non-linear hydraulic equations, when a direct solution is not possible. The software is arranged in a manner that will be familiar to spreadsheet users. Program modules, which each perform an individual task, are arranged like sheets or pages in a spreadsheet program.